3M® 1000NS Fire Barrier Water Tight Sealant, Light Gray, 10.1 Oz HELLOFALL10 you can rely on them

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3M® 1000NS Fire Barrier Water Tight Sealant, Light Gray, 10.1 Oz HELLOFALL10 you can rely on themThe 3M Fire Barrier Water Tight Sealant 1000 NS is a ready to use, single component, neutral cure, silicone sealant that cures upon exposure to atmospheric humidity to form a flexible firestop seal. The water tight sealants help control the spread of fire, smoke and noxious gases before, during and after exposure to fire. Meets UL Water Leakage Test, W Rating (Class 1 requirements) Firestop tested up to 3 hours in accordance with ASTM E 814 (UL 1479)